Help me plz! I could give you best answer.
1 answer:
area of triangle = 1/2 b x h
per the drawing b = 18 and h = 20
so area of 1 triangle = 1/2 x 18 x 20 = 180 square cm
there are 4 triangles in the picture
so 180 x 4 = 720 square cm total
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